NAME¶
vpEnable - enable or disable options
SYNOPSIS¶
#include <volpack.h>
vpResult
vpEnable(vpc,
option, value )
-
- vpContext *vpc;
-
- int option;
-
- int value;
ARGUMENTS¶
- vpc
- VolPack context from vpCreateContext.
- option
- Constant that specifies the option to be adjusted.
- value
- New value for the option (boolean: 0 or 1).
DESCRIPTION¶
vpEnable is used to enable or disable boolean options in a rendering
context. If the
value option is 0 then the option is disabled;
otherwise it is enabled. The following list summarizes all available options:
- VP_LIGHT0
- VP_LIGHT1
- VP_LIGHT2
- VP_LIGHT3
- VP_LIGHT4
- VP_LIGHT5
- Enable the corresponding light source (see vpSetLight(3)).
Default: VP_LIGHT0 is enabled, and all others are disabled.
- VP_LIGHT_BOTH_SIDES
- Enable two-sided lighting (see vpSetLight(3)). Default:
disabled
- VP_REVERSE_SURFACE_SIDES
- Reverse the definition of interior and exterior surfaces
(see vpSetMaterial(3)). Default: disabled
- VP_DEPTH_CUE
- Enable depth cueing (see vpSetDepthCueing(3)). Default:
disabled
- VP_VIEW_X_AXIS
- VP_VIEW_Y_AXIS
- VP_VIEW_Z_AXIS
- Enable computing a preclassified volume for the
corresponding major viewing axis (see vpClassifyVolume(3)). Default:
enabled
- VP_SHADOW
- Enable rendering shadows (see vpSetShadowLookupShader(3)).
Default: disabled
- VP_CLAMP_SHADE_TABLE
- Enable clamping the color components in a shade table to
the range 0.0-255.0. This option affects vpShadeTable(). Default:
enabled
ERRORS¶
The normal return value is VP_OK. The following error return value is possible:
- VPERROR_BAD_VALUE
- The option argument is invalid.
SEE ALSO¶
VolPack(3), vpCreateContext(3)